The Hippos were an American rock band formed in 1995 in Los Angeles, California, and disbanded in 2002. The band released three full-length albums. Their early work is best classified as part of the t
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1efa1e9a09cbee9e8abb46ec163224e9eb4b13ca8170f7e6ef7fd1da327f6ac. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69cda14f-fb1b-421a-bc8c-9d9b817c7431.json and https://artists.proofprofile.net/proofs/artist/69cda14f-fb1b-421a-bc8c-9d9b817c7431.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205dd27d137864484fa9ae233e624dac8d87b9f09e2bec4c0c162276384748b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e19540ba5d8132ae459659e25df632286b623d9b661ff486dda341e1de8355. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d74b0f60708dbb119a0c3801bc78a414c2d3a51f22f280712b1942484589f47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1566a6f9eaee51db40a34902cb48a6592778ab0d4a3c670c801964f8caea1ded. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354dc88db4f83356c1752b17d8ad5f9282e33e84fc7d93d0aa92c9fc9bba574. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c1c1dad95ac3821f5df59d8c96619aac78eb76b38f0a329788eb003dfcfda. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f7fbf80d2e318c702c57524d5770c5514cb7e8c3142d18c7eb8dc14e4cce2e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc35b8511143b8f9bf097b90986aae580c2d02e97a977fb88f06035c30ed9ae0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cba60db8ef9bdf11821c4dcc87cbd0ae36c45ee6911643a012fa50bde2a34d5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USIR19902414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc869240f911c9acee082346d13df56eabc8628e1061414d2c8c96b932f66a889. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4ZV1010401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d651f6a21a0d2e458bcd24eb4e429d1cee85e2a01487298094acb10c7371944. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4ZV1010298.
Take Warning: The Songs of Operation Ivy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623ad98129d72a649b7454e6d96a9477f294f3955758eedffe831ec60a744860. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USOEG9770102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b61f5005d12deb0eaeaa1f21b1b3c9e08449c1e2ceaa56d495959f947915cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USOEG9770108.
Snow Day (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ff49ea29b0a151cfef9d695bb6568abf1779108302f122c5c01efc4a4b06f3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USMO19883530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95abfee5c440335254a201f0953a0f3939804e2773b5f7792b3b900a1feae6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USEE19900321.